Episode 10 of The Summer I Turned Pretty season 3 sees relationships evolve as Belly navigates a new life in Paris while the Fisher brothers confront the fallout from the disastrous wedding. The episode, titled "Last Year," premiered on September 10, 2025, and picks up three months after Belly's impulsive decision to flee to Paris.

Belly's Parisian Reset

Belly is trying to build a new life for herself in Paris, juggling online classes, working at a bar, and sharing an apartment with three roommates. Though she is making new friends and seems happy, she is also homesick and lonely, especially during the holiday season. Despite the loneliness, she decides to stay in Paris for Christmas and New Year's, determined to make a fresh start.

As the New Year approaches, Belly celebrates her birthday and finds herself drawn to Benito, a local. However, she maintains that it is just a fling. She also learns of an opportunity to join a year-long psychology program at the Sorbonne, a prospect that excites her.

Conrad's Lingering Feelings

Conrad begins writing letters to Belly, but she does not respond. Despite this, he sends her a care package, including her favorite Junior Mints and the infinity necklace. Encouraged by a friend, Conrad decides to pursue Belly and books a flight to Paris. The episode ends with Conrad boarding the plane, ready to confront his feelings and win Belly back.

Jeremiah's Journey

Back in Cousins, Jeremiah is struggling to cope with the broken engagement and the fallout with Conrad. He is working at a restaurant but is still avoiding everyone. He eventually reconciles with Conrad and gives him his blessing to pursue Belly. Jeremiah admits that he always knew he could never have what Conrad and Belly shared.

The Filming Locations

While Cousins Beach is a fictional town inspired by Cape Cod, much of the filming took place in Wilmington, North Carolina and its surrounding beaches. Season 3 also features scenes filmed in Paris, where Belly is studying abroad. Specific Parisian locations include Rue Yves Toudic and streets in the 5th arrondissement. The crew also filmed studio scenes for Belly's apartment in Paris.

Episode 10 sets the stage for a dramatic finale. With Conrad on his way to Paris and both brothers finally beginning to heal, the final episode promises a resolution to the love triangle that has captivated viewers.